﻿* {
    box-sizing: border-box;
}
body {
    text-align: center;
    display: flex;
    height: 100vh;
    width: 100%;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
    background-image: url("https://www.toptal.com/designers/subtlepatterns/patterns/debut_light.png");
}
.nav {
    display: inline-flex;
    position: relative;
    overflow: hidden;
    max-width: 100%;
    background-color: #fff;
    padding: 0 20px;
    border-radius: 40px;
    box-shadow: 0 10px 40px rgba(159, 162, 177, .8);
}
.nav-item {
    color: #83818c;
    padding: 20px;
    text-decoration: none;
    transition: 0.3s;
    margin: 0 6px;
    z-index: 1;
    font-family: 'Roboto Condensed', sans-serif;
    font-weight: 500;
    position: relative;
}
.nav-item:before {
    content: "";
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: #dfe2ea;
    border-radius: 8px 8px 0 0;
    opacity: 0;
    transition: 0.3s;
}
.nav-item:not(.is-active):hover:before {
    opacity: 1;
    bottom: 0;
}
.nav-item:not(.is-active):hover {
    color: #333;
}
.nav-indicator {
    position: absolute;
    left: 0;
    bottom: 0;
    height: 4px;
    transition: 0.4s;
    height: 5px;
    z-index: 1;
    border-radius: 8px 8px 0 0;
}
@media (max-width: 580px) {
    .nav {
        overflow: auto;
    }
}